CN216028753U - Welding dust removal device and system - Google Patents

Abstract

The embodiment of the application provides a welding dust collector and system, wherein, this welding dust collector includes: the welding nozzle is used for being connected with welding equipment, the welding nozzle comprises a side wall and a welding opening, the welding equipment is used for welding the electrode terminal of the battery monomer and the confluence part through the welding opening, and at least one first opening is formed in the side wall of the welding nozzle; the collecting component is arranged outside the welding nozzle and forms a first cavity with the side wall of the welding nozzle, the first cavity is communicated with the inside of the welding nozzle through the first opening and is used for collecting dust generated in the welding process, and a dust collection interface is arranged on the collecting component and is used for discharging the dust in the first cavity. The welding dust collector and the system that this application embodiment provided can effectively get rid of the dust that produces in the welding process, avoid the metal granule in the dust to remain on battery module, cause the withstand voltage inefficacy of battery module insulation.

Description

Welding dust removal device and system

Technical Field

The present application relates to the field of battery manufacturing and, more particularly, to weld dust removal devices and systems.

Background

The battery module comprises a plurality of batteries connected in series and/or in parallel, each battery has an electrode terminal with different electric polarities, and in order to realize series and parallel connection between the battery cores, the electrode terminals and the confluence part need to be welded together by laser equipment. A large amount of dust can be generated in the welding process, and metal particles contained in the dust are easy to remain on the battery module, so that the voltage-resistant and failure-resistant insulation of the battery module is caused.

Therefore, how to effectively remove the dust generated in the welding process is a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a welding dust removal device and system, and dust generated in the welding process can be effectively removed.

In a first aspect, a welding dust collector is provided, including: the welding nozzle is used for being connected with welding equipment, the welding nozzle comprises a side wall and a welding opening, the welding equipment is used for welding the electrode terminal of the battery monomer and the confluence part through the welding opening, and at least one first opening is formed in the side wall of the welding nozzle; the collecting component is arranged outside the welding nozzle and forms a first cavity with the side wall of the welding nozzle, the first cavity is communicated with the inside of the welding nozzle through the first opening and is used for collecting dust generated in the welding process, and a dust collection interface is arranged on the collecting component and is used for discharging the dust in the first cavity.

Welding equipment is when carrying out weldment work through welding nozzle, can produce a large amount of dusts in welding nozzle's inside, through the welding dust collector that this application embodiment provided, can make the dust that welding process produced can get into the first cavity of collecting part through first opening, via dust absorption interface discharge dust again. Therefore, dust generated in the welding process can rapidly enter the cavity of the collecting component, and the problem of insulation and voltage resistance failure caused by the fact that the dust is remained on the battery module is effectively avoided.

In some embodiments, the collecting member surrounds the exterior of the sidewall of the welding nozzle such that the first cavity is annular.

The annular first cavity can enable the dust suction device to form an annular air flow in the annular cavity when sucking dust in the collecting component through the interface on the collecting component, so that dust inside the welding nozzle can enter the collecting component more easily. Simultaneously, the annular air current also can make the inside dust that produces of welding nozzle enter into the collecting part more fast to effectively get rid of the dust that produces among the welding process, avoid the dust to remain on the battery module, cause the withstand voltage of battery module to become invalid.

In some embodiments, the welding nozzle is provided with a plurality of first openings on a side wall thereof, and the plurality of first openings are identical in shape and size. The openings with the same shape and size are convenient for processing the welding dust removal device, and the manufacturing cost is reduced.

In some embodiments, the plurality of first openings are uniformly distributed along the circumferential direction of the welding nozzle, so that dust generated during welding can uniformly enter the collecting member in the circumferential direction.

In some embodiments, a projection of the first opening onto a plane passing through an axis of the welding nozzle is rectilinear in shape and the projection is at a first angle to the axis of the welding nozzle, the first angle being an acute angle.

The first opening extends obliquely upwards along the side wall of the welding nozzle, and dust generated at a certain transverse distance and a certain longitudinal distance can be sucked into the collecting component through the first opening quickly, so that the time that the residual dust in the welding nozzle stays in the welding nozzle is reduced as much as possible, and the dust is prevented from falling on the surface of the battery module from the welding nozzle as much as possible.

In some embodiments, the first angles of the first openings are the same, and projections on a plane perpendicular to the axis of the welding nozzle are distributed in a circumferential array. This kind of design can guarantee that the dust can get into collecting part on certain transverse distance and certain longitudinal distance fast under the condition that can get into collecting part, can also guarantee that the dust can get into collecting part on the circumferencial direction fast, further reduces the inside dust that is detained of welding nozzle.

By adopting the first opening, dust F generated in the welding process can directly enter the first cavity through the first opening within the generated height range, the retention time of the dust in the welding nozzle can be reduced, and the residual dust in the welding nozzle is reduced as much as possible.

In a second aspect, a welding dusting system is provided, comprising: the weld dust collector of any one of the first aspect; the cover plate is provided with a welding hole which is used for accommodating at least part of the welding nozzle; the jig structure and the cover plate form a hollow structure, and the hollow structure is used for accommodating a single battery so that the electrode terminal of the single battery is welded with the confluence part at the welding port.

The welding dust pelletizing system that this application embodiment provided can make welding process more high-efficient through combining welding dust collector and tool structure and apron. And can also arrange welding dust collector's quantity and position in a flexible way according to the free welding requirement of different batteries to adapt to different production demands.

In some embodiments, the hollow structure also serves to house the collection member. In this way, the collecting member can be brought closer to the welding area, so that dust generated by the welding process can rapidly enter the first cavity of the collecting member through the first opening.

In some embodiments, the side wall of the welding nozzle is provided with a positioning table protruding from the side wall, and the positioning table is connected with the cover plate through a connecting piece. The positioning table can ensure that the welding nozzle can be positioned at a fixed position in a certain direction, and the welding can be accurately carried out at a determined position, so that the welding quality can be ensured.

In some embodiments, the connecting member is a spring bolt, the positioning table is provided with a first positioning hole, the cover plate is provided with a second positioning hole, and the spring bolt penetrates through the first positioning hole and the second positioning hole to fix the welding dust removing device in a first direction and move the welding dust removing device in a second direction, the first direction is parallel to the cover plate, and the second direction is perpendicular to the cover plate.

Through spring bolted connection welding nozzle device and apron, can be so that the welding nozzle can be as required nimble adjustment in the second direction to the required welding height of the battery module of adaptation not unidimensional.

In some embodiments, the positioning table, the welding nozzle, and the collection member form the first cavity. The first cavity thus formed may have a larger capacity, being able to hold more dust.

In some embodiments, the collection member is located on a side of the positioning table proximate the weld area. Collecting part is close to the welding area more, can make the dust that welding process produced enter into first cavity through first opening fast in, effectively avoids the dust to fly away everywhere.

In some embodiments, a first dust suction channel is disposed inside the cover plate, one end of the first dust suction channel is connected to the dust suction port, and the other end of the first dust suction channel is connected to a dust suction device, and the dust suction device is configured to suck the dust. The first dust suction channel is integrated in the cover plate, so that the space occupied by the channel can be saved, and the position of the dust suction device can be set more reasonably by connecting the dust suction interface with the first dust suction channel in the cover plate.

In some embodiments, the jig structure is provided with a second dust suction channel, one end of the second dust suction channel is connected with the other end of the first dust suction channel, and the other end of the second dust suction channel is connected with the dust suction device. Set up second dust absorption passageway in the tool structure, and be connected with first dust absorption passageway, can be so that the dust of following suction in the welding nozzle passes through second dust absorption passageway and discharges, avoid discharging in placing the free space of battery, further avoid the possibility of dust and the free surface contact of battery.

In some embodiments, a first sealing ring is arranged at the other end of the first dust suction channel and/or a second sealing ring is arranged at one end of the second dust suction channel so as to seal the connection part of the first dust suction channel and the second dust suction channel. The sealing ring is arranged to ensure the air tightness of the joint between the channels, and when the dust suction device sucks air outwards through the channels, enough air pressure can be ensured to suck out dust in the welding dust removal device in the channels, so that a better dust removal effect is achieved.

The welding dust pelletizing system that this application embodiment provided sets up dust absorption channel in apron and tool structure for carry out the dust that the welded in-process produced at the free electrode terminals of battery and the part that converges and can get into welding dust collector's collection part rapidly, the rethread first dust absorption channel and second dust absorption channel are with dust discharge, can be effectively with the dust suction that produces in the welding process, avoid the dust to remain on the battery module and the withstand voltage problem of losing efficacy of the insulation that leads to. Meanwhile, the dust suction channel is integrated in the cover plate and the jig structure, the space occupied by the channel can be saved, the dust suction pipeline is communicated through automatic positioning of the mobile equipment, and the working efficiency can be improved.

Drawings

Fig. 1 is a schematic view of a welding dust removal device provided in an embodiment of the present application.

FIG. 2 is a perspective view of a welding dust collector provided in an embodiment of the present application.

Fig. 3 is a front view of a welding dust collector provided in an embodiment of the present application.

Fig. 4 is a cross-sectional view of a welding dust collector provided in an embodiment provided in the present application.

Fig. 5 is a top view of a welding dust collector provided in an embodiment of the present application.

FIG. 6 is a schematic diagram of a welding dust removal system provided by an embodiment of the present application.

FIG. 7 is a schematic diagram of a partial cross-sectional view of a cover plate in a welding dust removal system according to an embodiment of the present application.

Fig. 8 is a schematic partial cross-sectional view of a jig structure in the welding dust removal system according to an embodiment of the present application.

FIG. 9 is a top view of a weld dusting system provided by embodiments of the present application.

Description of reference numerals:

1-welding a nozzle; 2-a collecting member; 3-dust collection interface; 4-a positioning table; 5-cover plate; 6-a jig structure; 11-a side wall; 12-a welding port; 13-a first opening; 21-a first cavity; 41-a first positioning hole; 51-a welding hole; 52-second positioning hole; 53-a first dust extraction channel; 54-a first seal ring; 61-a second dust suction channel; 62-a second seal ring; 63-a third seal ring; f-dust.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.

The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "attached" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments of the present application, like reference numerals denote like parts, and a detailed description of the same parts is omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the present application and the overall thickness, length, width and other dimensions of the integrated device shown in the drawings are only exemplary and should not constitute any limitation to the present application.

The "plurality" in the present application means two or more (including two), and similarly, "plural" means two or more (including two) and "plural" means two or more (including two).

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the cylindrical battery monomer, the square battery monomer and the soft package battery monomer are not limited in the embodiment of the application.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, etc. Batteries generally include a case for enclosing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charging or discharging of battery monomer.

The battery monomer comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive plate, a negative plate and an isolating membrane. The battery cell mainly depends on metal ions moving between the positive plate and the negative plate to work. The positive plate comprises a positive current collector and a positive active substance layer, wherein the positive active substance layer is coated on the surface of the positive current collector, the current collector which is not coated with the positive active substance layer protrudes out of the current collector which is coated with the positive active substance layer, and the current collector which is not coated with the positive active substance layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative current collector and negative pole active substance layer, and the negative pole active substance layer coats in the surface of negative current collector, and the mass flow body protrusion in the mass flow body of coating the negative pole active substance layer of uncoated negative pole active substance layer, the mass flow body of uncoated negative pole active substance layer is as negative pole utmost point ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the diaphragm can be PP or PE, etc. In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

The bus bar member mentioned in the present application is used to achieve electrical connection between a plurality of battery cells, such as parallel connection or series-parallel connection. The bus member may achieve electrical connection between the battery cells by connecting electrode terminals of the battery cells. In some embodiments, the bus member may be fixed to the electrode terminals of the battery cells by welding.

In the process of welding the electrode terminals of the battery cells and the bus bar members, the welding equipment often generates a large amount of dust, and a special dust removing device is required to remove the dust. One current approach is to provide a dust suction device near the weld area to suck the generated dust from the side of the weld opening into the dust suction device. However, the dust removal method easily causes welding dust to remain on the battery module, and metal particles contained in the dust can cause insulation, voltage resistance and failure of the battery module.

Therefore, the welding dust removal device and the welding dust removal system can be suitable for the process needing welding in the production and manufacturing process of the battery, such as the process of welding the electrode terminal and the bus bar component, so as to effectively remove dust generated in the welding process

The welding dust removing device provided by the embodiment of the application is described in detail below with reference to fig. 1 to 5.

Fig. 1 to 5 illustrate a welding dust removal device provided by an embodiment of the present application, which may include a welding nozzle 1 and a collecting member 2. The welding nozzle 1 is used for being connected with welding equipment, the welding nozzle 1 comprises a side wall 11 and a welding opening 12, the welding equipment welds an electrode terminal and a confluence part of a battery cell through the welding opening 12, and at least one first opening 13 is formed in the side wall 11 of the welding nozzle 1; collecting component 2 sets up welding nozzle 1's outside, and with welding nozzle 1's lateral wall 11 forms first cavity 21, first cavity 21 passes through first opening 13 with welding nozzle 1's inside intercommunication, first cavity 21 is used for collecting the dust F that produces among the welding process, be provided with dust absorption interface 3 on collecting component 2, dust absorption interface 3 is used for with in the first cavity 21 dust F discharges.

Welding equipment can produce a large amount of dust F in welding nozzle's inside when carrying out welding work through welding nozzle 1, through the welding dust collector that this application embodiment provided, can make the dust F that welding process produced enter into the first cavity 21 of collecting component 2 through first opening 13, discharges dust F via dust absorption interface 3 again. Therefore, dust F generated in the welding process can rapidly enter the cavity of the collecting component, and the problem of insulation, voltage resistance and failure caused by the fact that the dust is remained on the battery module is effectively avoided.

As can be seen from fig. 2 to 5, the welding nozzle 1 may comprise a side wall 11 and a welding mouth 12. The cavity defined by the side wall 11 may be a truncated cone cavity as shown in fig. 2, or may be a cavity of other shapes, such as a cylindrical cavity. The thickness of the sidewall 11 may be uniform or non-uniform, for example, the outer shape and the inner shape of the welding nozzle may be completely the same, for example, both the outer shape and the inner shape are cylindrical or truncated cone, or the outer shape of the welding nozzle is cylindrical and the inner cavity is truncated cone. That is, the sidewall 11 may be a sidewall having a uniform thickness, a sidewall having a certain regular thickness, or a sidewall having an irregular thickness. It should be understood that the configuration shown in fig. 2 is by way of example only and not by way of limitation.

The welding nozzle 1 can be used for being connected with welding equipment, the welding equipment can emit laser from top to bottom through a cavity of the welding nozzle, wherein one end, connected with the welding equipment, of the welding nozzle is the upper end of the welding nozzle, and the end, far away from the welding equipment, of the welding nozzle is the lower end of the welding nozzle. The welding port 12 is the bottom surface of the truncated cone cavity at the lower end, and the welding equipment can weld the electrode terminal and the confluence part of the single battery through the welding port 12.

Meanwhile, at least one first opening 13 is provided on the sidewall 11 of the welding nozzle 1, and the first opening 13 may communicate the inside and the outside of the welding nozzle 1. The shape of the first opening 13 is not limited in the embodiment of the present application, and for example, the first opening may be a long-strip-shaped opening or a circular opening; may be uniformly distributed on the side wall 11, may be regularly distributed, or may be distributed in any manner. When the side wall 11 is provided with a plurality of first openings 13, the shape and size of each first opening 13 may be the same or different. It should be understood that, regardless of the shape of the first opening 13, it is an opening having a certain area so that the inside and the outside of the welding nozzle 1 can communicate.

The outside of welding nozzle 1 is provided with collecting member 2, and collecting member 2 forms first cavity 21 with the lateral wall of welding nozzle 1, and first cavity 21 communicates with the inside of welding nozzle 1 through first opening 13 for collect the dust F that produces in the welding process. That is, a large amount of dust F generated by the welding apparatus when performing welding work through the welding nozzle 1 may enter the first cavity 21 through the first opening 13, avoiding adhesion to the surface of the battery module through the welding opening 12.

The collecting member 2 can temporarily collect the dust F generated inside the welding nozzle 1 after discharging the dust F through the first opening 13 for subsequent dust removal, thereby preventing the dust F generated by welding from contacting the surface to be welded.

The collecting part 2 is provided with a dust suction port 3 for discharging the dust F collected in the first cavity 21. The part of the suction attachment 3 protruding from the surface of the collecting member 2, which part is provided with a thread and can be used for direct connection to a suction unit or for indirect connection to a suction unit via other means, for example via a hose or a suction channel. The dust collection connector 3 and the collection component 2 can be an integrated structure, or can be assembled by two mutually independent structures. When the dust collection port 3 and the collecting member 2 are assembled by two independent structures, an opening may be provided on a side wall of the collecting member 2, and the size of the opening is the same as that of one end of the dust collection port 3, so as to accommodate the dust collection port 3. The other end of the dust collection interface 3 can be provided with a boss, so that the dust collection interface can be clamped on the inner surface of the collection component 2. Alternatively, the boss of the dust suction port 3 may be fixedly connected to the sidewall of the collecting member 2 by a connecting member. The dust suction device connected to the dust suction port 3 may be a vacuum dust suction device, that is, the dust suction device may draw air in a direction toward the outside of the first cavity 21, and discharge the dust collected in the first cavity 21 by using the air pressure difference.

The side wall 12 shown in fig. 1 to 5 may be provided with a plurality of first openings 13, for example, three first openings 13. Wherein, the shape and the size of each first opening 13 in the plurality of first openings 13 can be the same, which is convenient for the processing of the welding dust removing device and reduces the manufacturing cost. It is understood that the shape and size of each first opening 13 of the plurality of first openings 13 may also be different shapes and sizes of openings as desired.

The projection of the first opening 13 on a plane passing through the axis of the welding nozzle 1 is linear in shape. As can be seen in connection with fig. 2 to 5, the first opening 13 extends upwardly along the side wall 11 for a distance, and the shape of the projection on a plane passing through the axis of the welding nozzle 1 is a straight line having a certain area. Wherein the projection plane is parallel to the tangent plane of the center point of the first opening 13 on the sidewall 11. That is, since the first opening 13 is an opening in the side wall 11, when the side wall 11 is shaped with a curvature, the first opening 13 is an arc-shaped opening having a certain area in the side wall 11, and when the area occupied by the arc-shaped opening is completely projected on a plane passing through the axis of the welding nozzle 1, that is, when the projection on the projection plane does not include an overlapping portion of the area occupied by the first opening 13, the projection is linear having a certain area. As can also be seen from fig. 3, when the projection of one of the first openings 13 is linear, the projections of the other first openings 13 on the same projection plane are irregular shapes having a certain area.

The rectilinear projection of the first opening 13 may be at a first angle, typically an acute angle, to the axis of the welding nozzle 1. For example, the angle may be set to 60 ° to 75 °, so that the dust F generated by welding can be discharged to the outside of the welding nozzle 1 through the first opening 13 in a range of a certain height and width of the welding nozzle 1 from the welding opening 12.

That is, the first opening 13 extends obliquely upward along the side wall 11 of the welding nozzle 1, and the dust F generated at a certain lateral distance and a certain longitudinal distance inside the welding nozzle 1 can be quickly sucked into the collecting member through the first opening, so that the time that the residual dust inside the welding nozzle stays inside the welding nozzle is minimized, and the dust is prevented from falling on the surface of the battery module from the welding opening as much as possible.

The plurality of first openings 13 may also be evenly distributed along the circumference of the welding nozzle 1. The plurality of first openings 13 shown in fig. 2 to 5 are identical in shape and size, i.e., are linear on the projection plane corresponding to each first opening, and are also identical in first angle with the axis of the welding nozzle 1. Since the three first openings 13 are uniformly distributed along the circumferential direction of the welding nozzle 1, it can be seen in fig. 5, which is a top view of the welding dust removing device provided in the embodiment of the present application, that the projections of the plurality of first openings 13 on a plane perpendicular to the axis of the welding nozzle 1 are distributed in a circumferential array.

This kind of design can guarantee that the dust can get into collecting part on certain transverse distance and certain longitudinal distance fast under the condition that can get into collecting part, can also guarantee that the dust can get into collecting part on the circumferencial direction fast, further reduces the inside dust that is detained of welding nozzle.

It should be understood that the three first openings 13 shown in fig. 2 to 5 are only examples and do not form any limitation on the embodiments of the present application.

The collecting member 2 is provided outside the welding nozzle 1, and the collecting member 2 may cover only a part of the circumference of the side wall 11 of the welding nozzle 1 in the circumferential direction of the welding nozzle 1, or may surround the outside of the side wall 11 of the welding nozzle 1 such that the first cavity 21 is annular. Fig. 2 to 5 show a case where the collecting member 2 is wound around the outside of the side wall 11 of the welding nozzle 1. In the structure shown in fig. 2 to 5, the outer surface of the collecting member 2 is defined in a rectangular parallelepiped shape, and the outer surface of the welding nozzle 1 is defined in a circular truncated cone shape, so that the first cavity 21 formed around the outside of the side wall 11 of the welding nozzle 1 by the collecting member 2 has an irregular annular shape. It should be understood that, since the welding nozzle 1 and the collecting member 2 may have different shapes, the annular shape of the first cavity 21 may be a circular ring, a square ring, or an irregular annular shape, and the shape of the annular shape is not limited in the embodiment of the present application.

The annular shape of the first cavity 21 enables the dust suction device to form an annular air flow in the annular cavity when sucking out the dust F in the collecting member 2 through the interface on the collecting member 2, so that the dust inside the welding nozzle 1 can enter the collecting member 2 more easily. Simultaneously, the annular air current also can make the dust that the inside produced of welding nozzle 1 get into collection part 2 more fast to effectively get rid of the dust F that produces among the welding process, avoid the dust to remain on the battery module, cause the withstand voltage inefficacy of battery module insulation.

The embodiment of the present application further provides a welding dust removal system, and the welding dust removal system provided by the embodiment of the present application is described in detail below with reference to fig. 6 to 9.

Fig. 6 to 9 illustrate a welding dust removal system provided in an embodiment of the present application, where the welding dust removal system includes the welding dust removal device, the cover plate 5, and the jig structure 6 shown in fig. 1 to 5. In order to facilitate understanding of the structure of the welding dust removal system, only the positions where the welding dust removal device can be placed are shown in fig. 6 to 9, and the welding dust removal device included in the welding dust removal system is not shown.

As shown in fig. 6 to 9, the cover plate 5 of the welding dust removal system is provided with a welding hole 51 which can be used for accommodating at least part of the welding nozzle 1. The welding dust removal system further comprises a jig structure 6 which forms a hollow structure with the cover plate 5, and the hollow structure is used for accommodating the battery monomer. The jig structure 6 is a work mode for moving, loading and unloading the battery monomer, is pushed into a work position through a customized mobile trolley and is positioned on the welding work platform. When welding the electrode terminals of the battery cells and the bus bar, the battery cells are accommodated in the hollow structure formed by the jig structure 6 and the cover plate 5.

The welding dust pelletizing system that this application embodiment provided can make welding process more high-efficient through combining welding dust collector and tool structure and apron. And can also arrange welding dust collector's quantity and position in a flexible way according to the free welding requirement of different batteries to adapt to different production demands.

In the welding dust removal system provided by the embodiment of the application, the welding dust removal device may further include a positioning table 4. Wherein, the positioning table 4 is convexly arranged on the side wall 11 of the welding nozzle 1 and is used for being connected with the cover plate 5 through a connecting piece. The positioning table 4 is arranged on the welding dust removal device, so that the welding nozzle 1 can be ensured to be in a fixed position in a certain direction, and the welding can be accurately carried out at a determined position, and the welding quality can be ensured.

The positioning table 4 of the welding dust removing device can be further provided with at least one first positioning hole 41, the cover plate 5 can be further provided with a second positioning hole 52, and the first positioning hole 41 can be connected with the second positioning hole 52 through a spring bolt. Specifically, the spring bolt may penetrate the first positioning hole 41 and the second positioning hole 52, so that the welding dust removing device may be fixed in a first direction parallel to the cover plate 5 and movable in a second direction perpendicular to the cover plate. The first direction may be any direction parallel to the plane of the cover plate 5, and the second direction may be a direction perpendicular to the plane. Alternatively, the cover plate 5 has a certain thickness, and the thickness direction is the second direction, and a plane perpendicular to the thickness direction is a plane parallel to the cover plate 5, and the first direction may be any direction on the plane. Through spring bolted connection welding nozzle device and apron, can be so that the welding nozzle can be as required nimble adjustment in the second direction to the required welding height of the battery module of adaptation not unidimensional.

The positioning table 4 can be arranged at any height of the welding nozzle 1 and together with the welding nozzle 1 and the collecting member 2 forms a first cavity 21. The first cavity 21 thus formed has a larger volume and can accommodate more dust F.

It will be appreciated that in order to be able to collect the dust F generated during the welding process efficiently, the collecting member 2 is located on the side of the positioning table 4 close to the welding area, and the first opening 13 may also be located on this side. The collecting part is closer to the welding area, so that dust F generated in the welding process can rapidly enter the first cavity 21 through the first opening 13, and the dust F is effectively prevented from flying around.

The cover plate 5 may be provided with a plurality of welding holes 51 and a plurality of second positioning holes 52 to provide a space for accommodating at least a portion of the welding nozzles 1 of the plurality of welding dust removing devices. For example, two rows of 12 welding dust removers may be placed on the cover plate 5 shown in fig. 6 and 9, a portion of the welding nozzle 1 of each welding dust remover is received in one welding hole 51, and 4 second positioning holes 52 are provided around each welding hole 51 for fixing the welding dust remover in the first direction.

As can be seen from fig. 7, the welding dust removing device can be installed from the lower side of the cover plate 5, and the first positioning hole 41 of the welding dust removing device and the second positioning hole 52 of the cover plate 5 are connected by a spring bolt. The spring bolts can enable the welding dust removal device to move in the direction perpendicular to the cover plate, so that the position of the welding port 12 can be flexibly adjusted. That is, the welding hole 51 may receive at least a portion of the welding nozzle 1 of the welding dust removing device, so that the welding dust removing device may have a large margin when adjusting the height up and down, and specifically, may be a portion of the positioning table 4 on the side away from the welding opening 12. Alternatively, the welding dust removing device may be mounted above the cover plate 5, and the portion of the welding nozzle 1 accommodated in the welding hole 51 is the portion of the positioning table 4 on the side close to the welding port 12. That is, when the positioning table 4 of the welding dust removing device is positioned below the cover plate, at least the collecting member 2 of the welding dust removing device is accommodated in the hollow structure. And the part of the welding dust removing device which is not accommodated in the welding hole 51 of the cover plate 5 is accommodated in the hollow structure formed by the jig structure 6 and the cover plate 5. In this way, the collecting member can be brought closer to the welding area, so that dust generated by the welding process can rapidly enter the first cavity of the collecting member through the first opening.

Optionally, a first dust suction channel 53 may be further provided inside the cover plate 5 for discharging dust generated during the welding process. One end of the first dust suction channel 53 is connected with the dust suction port 3, and the other end is connected with the dust suction device. One end of the first dust suction channel 53 may be directly connected to the dust suction port 3, or may be indirectly connected to the dust suction port 3, for example, one end of the first dust suction channel 53 is connected to the dust suction port 3 through a hose. Similarly, the other end of the first dust suction passage 53 may be directly connected to the dust suction device or indirectly connected to the dust suction device. Then, after dust generated in the welding process enters the collecting part 2, the dust can be discharged to the first dust suction channel 53 through the dust suction port 3 and then discharged from the first dust suction channel 53. The first dust suction channel 53 is integrated in the cover plate 5, the space occupied by the channel can be saved, and the position of the dust suction device can be set more reasonably by connecting the dust suction port 3 with the first dust suction channel 53 inside the cover plate 5.

It should be understood that the first dust extraction channel 53 may also be provided outside the cover plate, or at other locations in the weld dust removal system. The first dust suction channel 53 is disposed inside the cover plate in the embodiment of the present application, which is only an example and is not limited at all.

Optionally, the other end of the first dust suction channel 53 shown in fig. 7 may be further provided with a first sealing ring 54, when the other end of the first dust suction channel 53 is connected with another channel, or is connected with a dust suction device, the first sealing ring 54 may ensure that a joint between the first dust suction channel and the other channel has better air tightness, and when the dust suction device draws air outwards through the channel, it may ensure that sufficient air pressure exists in the channel to suck out dust in the welding dust removal device, so as to achieve a better dust removal effect.

Optionally, the jig structure 6 may further include a second dust suction channel 61, one end of the second dust suction channel 61 is connected to the other end of the first dust suction channel 53, and the other end of the second dust suction channel 61 is connected to the dust suction device. As can be seen from fig. 6 to 8, an opening of the second dust suction channel 61 is located at a position corresponding to an opening of the first dust suction channel 53 on the cover plate 5, so that when the cover plate 5 and the jig structure 6 are in the fixed connection state shown in fig. 6, the first dust suction channel 53 and the second dust suction channel 61 can be communicated, so that dust generated in the welding process can be discharged through the first dust suction channel 53 and the second dust suction channel 61.

Set up second dust absorption passageway in the tool structure, and be connected with first dust absorption passageway, can be so that the dust of following suction in the welding nozzle passes through second dust absorption passageway and discharges, avoid discharging in placing the free space of battery, further avoid the possibility of dust and the free surface contact of battery.

Optionally, one end of the second dust suction passage 61 shown in fig. 8 may be further provided with a second sealing ring 62. When one end of the second dust suction channel 61 is connected with the first dust suction channel 53, the second sealing ring 62 can ensure that the joint of the second dust suction channel and the first dust suction channel has better air tightness, and when the dust suction device sucks air outwards through the channel, enough air pressure can be ensured in the channel to suck out dust in the welding dust removal device, so that a better dust removal effect is achieved. Similarly, the other end of the second dust suction channel 61 may also be optionally provided with a third sealing ring 63, so that the joint between the second dust suction channel and the dust suction device or other devices has better air tightness.

It should be understood that, since the first sealing ring 54 and the second sealing ring 62 are disposed at the same interface, and both ensure the air tightness at the same interface, only the first sealing ring 54 may be disposed, or only the second sealing ring 62 may be disposed, or both the first sealing ring 54 and the second sealing ring 62 may be disposed, so that the connection between the first dust collecting channel 53 and the second dust collecting channel 61 can be ensured to have better air tightness.

The welding dust pelletizing system that this application embodiment provided combines welding dust collector and tool structure and apron, can make welding process more high-efficient. And set up the welding hole that holds at least part welding dust collector on apron 5 to adjustment welding dust collector's operating height can also arrange welding dust collector's quantity and position in a flexible way according to the free welding requirement of different batteries, in order to adapt to different production demands.

In addition, through set up the dust absorption passageway in apron 5 and tool structure 6, make can get into welding dust collector's collection part 2 rapidly at the dust that carries out the welded in-process to the free electrode terminals of battery and the part that converges, the rethread first dust absorption passageway 53 and second dust absorption passageway 61 discharge the dust, can be effectively with the dust suction that produces in the welding process, make the space of discharging dust and the free space of placing the battery not contact, avoid the possibility of dust and the free surface contact of battery, thereby avoid the dust to remain on the battery module and the withstand voltage inefficacy problem of the insulation that leads to. Meanwhile, the dust suction channel is integrated in the cover plate 5 and the jig structure 6, so that the space occupied by the channel can be saved, and the dust suction pipeline is communicated through automatic positioning of mobile equipment, so that the working efficiency is improved.

While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (15)

1. A welding dust collector, its characterized in that includes:

the welding nozzle (1) is used for being connected with welding equipment, the welding nozzle (1) comprises a side wall (11) and a welding opening (12), the welding equipment is used for welding an electrode terminal and a confluence part of a battery cell through the welding opening (12), and at least one first opening (13) is formed in the side wall (11) of the welding nozzle (1);

collecting component (2), collecting component (2) set up the outside of welding nozzle (1), and with lateral wall (11) of welding nozzle (1) form first cavity (21), first cavity (21) pass through first opening (13) with the inside intercommunication of welding nozzle (1), first cavity (21) are arranged in collecting the dust (F) that produces among the welding process, be provided with dust absorption interface (3) on collecting component (2), dust absorption interface (3) are used for with in first cavity (21) dust (F) are discharged.

2. Welding dust extraction device according to claim 1, characterized in that the collecting member (2) is arranged around the outside of the side wall (11) of the welding nozzle, so that the first cavity (21) is annular.

3. The welding dust extraction device according to claim 1, characterized in that a plurality of said first openings (13) are provided in the side wall (11) of the welding nozzle (1), said first openings (13) being of the same shape and size.

4. The welding dust extraction device according to claim 3, characterized in that a plurality of the first openings (13) are evenly distributed in the circumferential direction of the welding nozzle (1).

5. The welding dust collector as claimed in any one of claims 1 to 4, characterized in that the projection of the first opening (13) on a plane passing through the axis of the welding nozzle (1) is rectilinear in shape and is at a first angle to the axis of the welding nozzle (1), the first angle being an acute angle.

6. The weld dust collector according to claim 5, wherein the first angles of the first openings (13) are the same and the projections on a plane perpendicular to the axis of the welding nozzle (1) are distributed in a circumferential array.

7. A welding dusting system, comprising:

the welding dust collector of any one of claims 1-6;

the cover plate (5), a welding hole (51) is arranged on the cover plate (5), and the welding hole (51) is used for accommodating at least part of the welding nozzle (1);

the jig structure (6) and the cover plate (5) form a hollow structure, and the hollow structure is used for accommodating a single battery, so that the electrode terminal of the single battery is welded with the confluence part at the welding port (12).

8. The welding dusting system according to claim 7, characterized in that the hollow structure is also used to house the collecting member (2).

9. The welding dust removal system of claim 7, characterized in that a positioning table (4) protruding from the side wall (11) is arranged on the side wall (11) of the welding nozzle (1), and the positioning table (4) is connected with the cover plate (5) through a connecting piece.

10. The welding dusting system according to claim 9, characterized in that the connecting member is a spring bolt, a first positioning hole (41) is provided on the positioning table (4), a second positioning hole (52) is provided on the cover plate (5), and the spring bolt penetrates through the first positioning hole (41) and the second positioning hole (52) to fix the welding dusting device in a first direction parallel to the cover plate (5) and move in a second direction perpendicular to the cover plate (5).

11. The welding dusting system according to claim 9, characterized in that the positioning table (4), the welding nozzle (1) and the collecting member (2) form the first cavity (21).

12. The welding dusting system according to claim 9, characterized in that the collecting member (2) is located at a side of the positioning table (4) close to the welding area.

13. The welding dusting system of any of claims 9 to 12,

the dust collector is characterized in that a first dust suction channel (53) is arranged inside the cover plate (5), one end of the first dust suction channel (53) is connected with the dust suction interface (3), the other end of the first dust suction channel (53) is connected with a dust suction device, and the dust suction device is used for sucking dust.

14. The welding dusting system of claim 13,

the jig structure (6) is provided with a second dust suction channel (61), one end of the second dust suction channel (61) is connected with the other end of the first dust suction channel (53), and the other end of the second dust suction channel (61) is connected with the dust suction device.

15. The welding dusting system of claim 14,

a first sealing ring (54) is arranged at the other end of the first dust suction channel (53) and/or a second sealing ring (62) is arranged at one end of the second dust suction channel (61) so as to seal the joint of the first dust suction channel (53) and the second dust suction channel (61).

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